/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/Operations/SplitAttributeWelder.h
Welds split colors shared by the ParentVID vertex in the ParentMesh.
static void WeldSplitColors ( const int32 ParentVID, [FDynamicMeshColorOverlay](API\Runtime\GeometryCore\DynamicMesh\TDynamicMeshVectorOverlay) & ColorOverlay, float ColorDistSqrdThreshold )